/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package cn.icanci.loopstack.damc.core.dynamic;

import java.util.ArrayList;
import java.util.List;

import org.apache.commons.collections4.CollectionUtils;
import org.apache.commons.lang3.StringUtils;

import cn.icanci.loopstack.damc.core.dynamic.visitor.ModifierClassVisitor;
import cn.icanci.loopstack.damc.spi.model.pubsub.PublishDTO;
import cn.icanci.loopstack.damc.spi.model.refresh.DynamicCondition;
import cn.icanci.loopstack.damc.spi.model.refresh.DynamicConditionWrapper;
import cn.icanci.loopstack.damc.spi.model.refresh.RefreshCell;

/**
 * Class method reload Trigger
 */
public class ReTransformTrigger implements ReTransformTriggerMBean {

    /**
     * 触发器
     *
     * @param cell cell
     * @throws Exception Exception
     */
    @Override
    public void reTransformClass(RefreshCell cell) throws Exception {
        String clazz = cell.getClazz();
        Class<?> targetClass = Class.forName(clazz);

        List<DynamicCondition> conditions = new ArrayList<>();
        List<RefreshCell.Cell> cells = cell.getCells();
        if (CollectionUtils.isNotEmpty(cells)) {
            for (RefreshCell.Cell cellCell : cell.getCells()) {
                String script = cellCell.getScript();
                if (StringUtils.isNotBlank(script)) {
                    DynamicCondition dynamicCondition = new DynamicCondition(cellCell.getMethodName(), cellCell.getDescriptor());
                    conditions.add(dynamicCondition);
                }
            }
        }

        List<DynamicConditionWrapper> dynamicConditions = new ArrayList<>();

        DynamicConditionWrapper cd = new DynamicConditionWrapper(ModifierClassVisitor.class, conditions);

        dynamicConditions.add(cd);

        DynamicAgentClassCache.addDynamicConditions(targetClass, dynamicConditions);

        DynamicAgent.reTransform(targetClass);

    }

    /**
     * 发布触发器
     *
     * @param publish publish
     */
    @Override
    public void reTransformClass(PublishDTO publish) throws Exception {
        for (RefreshCell cell : publish.getClasses()) {
            reTransformClass(cell);
        }
    }
}
